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Subjects>Math>Math & Arithmetic

Is 8 over 21 a rational number Yes or no?

Updated: 10/24/2022

Alexgerezgp1827 ∙

Lvl 1

∙ 10y ago

Best Answer

ANY number that you can write as a fraction (with whole numbers top and bottom) is rational.

Wiki User

∙ 10y ago

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Is the square root of 441 a rational number?

Yes because 21 is a rational number

Is 21 a rational number?

Yes. Any whole number is rational. An irrational number is one that goes on forever without repeating, like √2=1.414213...

Is 13.21 repeating rational?

Yes, 13.'21' repeating is a rational number because it can be expressed in the form of a fraction as 436/33

Why is 0.21 a rational number?

0.21 is a rational number because it can be expressed as a fraction in the form of 21/100

Is 4.2 an irrational or rational number?

It is rational because it can be expressed as a fraction which is 21/5

Related questions

Is 8 over 21 rational?

Yes, any integer over any other integer (except zero) is always a rational number.

Is 0.36 rational or irrational?

Rational.

Is 8 over 21 a rational or irrational number?

Any number that is presented as an integer "over" (aka divided by) an integer is automatically a rational number - that's what the definition of a rational number is.

Is 21 over the square root of 4 a rational or irrational?

It is equal to 21/2 which is a rational number

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21 is a rational number.

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21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.

Is 21 a rational?

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Yes because it can be expressed as a fraction in the form of 21/2

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Why is 0.21 a rational number?

0.21 is a rational number because it can be expressed as a fraction in the form of 21/100

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